build: update minifyEnabled setting in release build

- Change minifyEnabled from true to false in the release buildType
- Update the ProGuard configuration to exclude javax.mail and javax.activation. classes

Author: muzahidul-opti

android/build.gradle

@@ -59,8 +59,7 @@ android {
 
     buildTypes {
         release {
-            minifyEnabled true
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+            minifyEnabled false 
         }
     }
 

android/proguard-rules.txt

@@ -12,4 +12,10 @@
 -keep class com.fasterxml.jackson.** {*;}
 # Logback
 -keep class ch.qos.** { *; }
+
+# Mail classes (Logback SMTP appender)
+-dontwarn javax.mail.**
+-dontwarn javax.mail.internet.**
+-dontwarn javax.activation.**
+
 ##---------------End: proguard configuration ----------